Update the import package name for TestHive in sbt shell

sbt/sbt hive/console will fail as TestHive changed its package from "org.apache.spark.sql.hive" to "org.apache.spark.sql.hive.test".

Author: Cheng Hao <hao.cheng@intel.com>

Closes #574 from chenghao-intel/hive_console and squashes the following commits:

de14035 [Cheng Hao] Update the import package name for TestHive in sbt shell

(cherry picked from commit ea01aff)
Signed-off-by: Reynold Xin <rxin@apache.org>

project/SparkBuild.scala

@@ -506,7 +506,7 @@ object SparkBuild extends Build {
         |import org.apache.spark.sql.catalyst.util._
         |import org.apache.spark.sql.execution
         |import org.apache.spark.sql.hive._
-        |import org.apache.spark.sql.hive.TestHive._
+        |import org.apache.spark.sql.hive.test.TestHive._
         |import org.apache.spark.sql.parquet.ParquetTestData""".stripMargin
   )